The one you got must be for the 2.5.
As the 12v socket is located on the centre console not the cubby hole, as you say it's now blocked.
I was lucky enough to get one designed for the mk2, sorry I don't mean to rub it in.

you can make it fit if you measure the original socket hole and recut it or drill it into the new storage alternatively just move it by extending the wires to the side console nearthe handbrake etc you dont need an st ashtray the focus cc uses the ashtray with the socket in it

Well anyway, as per another post i've updated on i've fitted my ashtray.
Everything was easy apart from getting the socket out of the old position.
I had a hell of a job removing the socket from the black sleeve it's held by in the old position due to a totally useless bulb holder which does not have a bulb or contacts in and being black would not let light through anyway.
Nothing that a bit of butchery with a pair of pliers didn't solve in the end.
Now fitted and looking good but i will probably have to revisit the project in the next couple of days as i need to move my aux cable as it comes out just above the flap and gets in the way.
I reckon that if i put it through the same route as the 12v socket wiring then it will look smarter and mean no loose wires showing when the flap is closed.
Another good thing is that the 12v feed for the socket light dims with my dash lights and also is perfectly positioned to allow a tap off if i ever get around to fitting an illuminated gear knob.
I'd just need to find a suitable earth wire/point.
Anyone know which of the wires to the 12v socket is the ground line?

then the black is the earth mate but to be sure,you could wire up a light or led,then put the negative of the light to the body of the car then the positive to the black cable on the 12v socket,if the bulb illuminates then its not the black

Look on eBay and type in focus mk2 breaking,,, and just ring round and ask if they have the centre console ashtray that has the door, I did this and got mine for a tenner, plus p & p, still a hell if a lot cheaper than waiting for one to pop up on eBay.